Hot compressed water pretreatment of oil palm fronds to enhance glucose recovery for production of second generation bio-ethanol

This work presents the pretreatment of oil palm fronds (OPF) using hot compressed water (HCW) to enhance sugar recovery in enzymatic hydrolysis. A central, composite rotatable design was used to optimize the effect of reaction temperature, reaction time and liquid–solid ratio on the pretreatment pro...

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Bibliographic Details
Published in:Bioresource technology 2010-10, Vol.101 (19), p.7362-7367
Main Authors: Goh, Chun Sheng, Lee, Keat Teong, Bhatia, Subhash
Format: Article
Language:English
Subjects:
Analysis of Variance
Biofuel
Biofuel production
Biofuels - analysis
Biological and medical sciences
Biotechnology
Compressed
Energy
Ethanol - metabolism
Fundamental and applied biological sciences. Psychology
Glucose
Glucose - analysis
Glucose - isolation & purification
Hot Temperature
Industrial applications and implications. Economical aspects
Lignin - analysis
Lignocellulose pretreatment
Mathematical models
Models, Chemical
Multiple regression analysis
Optimization
Palm
Palm Oil
Plant Leaves - drug effects
Plant Oils - chemistry
Polysaccharides - analysis
Pretreatment
Recovery
Regression Analysis
Response surface methodology
Sugar recovery
Water - pharmacology
Xylose - analysis
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Summary:This work presents the pretreatment of oil palm fronds (OPF) using hot compressed water (HCW) to enhance sugar recovery in enzymatic hydrolysis. A central, composite rotatable design was used to optimize the effect of reaction temperature, reaction time and liquid–solid ratio on the pretreatment process. All variables were found to significantly affect the glucose yield. A quadratic polynomial equation was used to model glucose yield by multiple regression analysis, using response surface methodology (RSM). Using a 10 bar pressurized reactor, the optimum conditions for pretreatment of OPF were found at 178 °C, 11.1 min and a liquid–solid ratio of 9.6. The predicted glucose yield was 92.78 wt.% at the optimum conditions. Experimental verification of the optimum conditions gave a glucose yield in good agreement with the estimated value of the model.
ISSN:0960-8524
1873-2976
DOI:10.1016/j.biortech.2010.04.048